We are currently using Dracula and GitHub themes (from Prism module) for the syntax highlighting, however these themes don't really match our branding and could be changed, or even better replaced by a custom theme.
When browsing the docs on mobile, the layout is broken (c.f. https://pasteboard.co/xuMPWMEI2BOT.png), not sure if this is coming from the navbar itself (use Primitive button) or the content of the page.